CVE-2026-20016: medium-severity vulnerability in Cisco Secure Firewall Threat Defense (FTD)…
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6epss 0.4%
A vulnerability in the Cisco FXOS Software CLI feature for Cisco Secure Firewall ASA Software and Secure FTD Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system with root-level privileges. To exploit this vulnerability, the attacker must have valid administrative credentials on an affected device.
This vulnerability is due to insufficient input validation of user-supplied command arguments. An attacker could exploit this vulnerability by submitting crafted input for specific CLI commands. A successful exploit could allow the attacker to execute commands on the underlying operating system with root-level privileges.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Affected products
Cisco · Cisco Secure Firewall Threat Defense (FTD) SoftwareRelated CVEs — Cisco Secure Firewall Threat Defense (FTD)…
In the same product, most dangerous first.
CVE-2025-20362MEDIUMCVE-2025-20362EPSS 87.1%KEVCVE-2025-20333CRITICALCVE-2025-20333EPSS 71.2%KEVCVE-2026-20349HIGHCisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service VulnerabilityEPSS 1.0%KEVCVE-2026-76418HIGHCisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Tunnel Denial of Service VulnerabilityEPSS 0.8%KEVCVE-2024-20358MEDIUMCVE-2024-20358EPSS 0.7%CVE-2026-20135HIGHCisco Secure Firewall Threat Defense Software TLS 1.3 Denial of Service VulnerabilityEPSS 0.7%